Surface configuration of tank cover



FIG. 1 is a top perspective view of a surface configuration of tank cover according to our novel design;

FIG. 2 is a front view of the surface configuration of tank cover according to our novel design;

FIG. 3 is a top view of the surface configuration of tank cover according to our novel design; and,

FIG. 4 is a side view of the surface configuration of tank cover according to our novel design.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a surface configuration of tank cover, as shown and described. 